Dividing Marital Property (Sin Somros) in a Thai Divorce

Two Categories of Property Under Thai Law
Under the Civil and Commercial Code (CCC), all property connected to a marriage falls into one of two categories. Personal property, known as sin suan tua, belongs to one spouse alone and is not divided on divorce. Marital property, known as sin somros, is jointly owned and is split between the spouses when the marriage ends. Getting an asset classified correctly is the entire battle in most property disputes, because the label — not whose name is on the paperwork — decides who keeps it.

Since the Marriage Equality Act came into force on 23 January 2025, these rules apply identically to all married couples regardless of gender.

What Counts as Personal Property (Sin Suan Tua)
Under Section 1471, personal property includes:

- Property either spouse already owned before the marriage.
- Property for personal use — clothing, ornaments, and jewellery suitable to the person's station, and the tools needed for their profession.
- Property received during the marriage through a will or as a gift made specifically to that one spouse.
Khongman — the engagement gift.

Section 1472 adds an important extension: if personal property is sold, exchanged, or destroyed and replaced, whatever takes its place stays personal. So if you sell a car you owned before marriage and buy another with the proceeds, the new car remains yours alone — provided you can prove the money came from the original personal asset.

What Counts as Marital Property (Sin Somros)
Under Section 1474, marital property includes:

- Any property acquired by either spouse during the marriage.
- Property received during the marriage by will or gift where the document declares it to be jointly owned.
- The "fruits" of personal property — the income it generates, such as rent, dividends, or interest.

That third rule surprises many people. Even if an apartment is your personal property, the rent it earns during the marriage becomes marital property and is shared on divorce.

Section 1474 also contains a decisive presumption: where there is any doubt about which category an asset belongs to, it is treated as marital property. In practice this means the spouse who claims something is personal must prove it. If the evidence is thin, the asset is split.

The Equal Division Rule
When a court dissolves a marriage, Section 1533 requires marital property to be divided equally — a straight 50/50 split, regardless of who earned more or whose name holds the title. Section 1535 applies the same principle to debts: liabilities incurred as common debts of the marriage are shared equally.

Equal division applies to the net marital estate. Indivisible assets like a house or a car cannot be cut in half, so in practice the court or the parties arrange a buy-out, a sale with the proceeds split, or an offset against other assets.

The Burden of Proof: Documentation Wins Cases
Because of the marital-property presumption, Thai divorce disputes are won and lost on evidence. The spouse asserting that an asset is personal must produce documents that trace it — title deeds, purchase contracts, bank statements, and especially remittance slips showing the source of the funds. Vague claims that "I paid for it" will not defeat the presumption. Couples who keep clean records of what each person brought into the marriage, and what was bought with those funds, are in a far stronger position if the marriage later breaks down.

Hidden or Dissipated Assets
Spouses sometimes try to shrink the marital pot before a divorce by transferring, selling, or giving away assets. Section 1534 addresses this: where a spouse has disposed of marital property in bad faith, or made a major transaction that legally required the other spouse's consent, the value can be treated as if it still exists and counted in the division. A court can, in effect, put the missing value back into the pot.

The Marital Home and Whose Name Is on the Title
A common misunderstanding is that the family home belongs to whoever is named on the title. That is not how Thai law works. If the home was acquired during the marriage, it is presumed to be marital property under Section 1474 even if registered in only one spouse's name — and it is divided accordingly. The classification follows the law and the evidence, not the title register.

Special Rules for Foreigners: Land
Foreigners cannot own land in Thailand, and when a Thai national married to a foreigner buys land, the Land Office typically requires both spouses to sign a declaration confirming that the funds are the Thai spouse's personal property, so the land is registered as that spouse's separate property. Foreign spouses often assume this declaration permanently signs away any interest they have. It does not.

The Supreme Court has held that such a Land Office declaration is only preliminary evidence, not conclusive proof, of how the property should be classified. Whether land is personal or marital property is determined by the Civil and Commercial Code on the whole of the evidence.

Supreme Court Judgment No. 14736/2555: A British husband used his own income during the marriage to buy land and a house registered in his Thai wife's name, and he had signed the usual Land Office declaration stating the money was her personal property. On divorce, the Supreme Court held that the declaration was only preliminary evidence; because the evidence showed he had not intended to give the property to his wife alone, the land and house were marital property jointly owned in equal shares, to be divided either by partition or by sale and an equal split of the proceeds.

The practical lesson runs through this whole area: keep the paper trail. Bank remittance slips and records showing the source of the funds can be decisive in proving that property registered in one spouse's name should in fact be treated as marital property.

Prenuptial Agreements: What They Can and Cannot Do
A properly made prenuptial agreement is the single most effective tool for avoiding property disputes. Under Sections 1465 to 1467, a Thai prenup must be in writing, signed by both parties and at least two witnesses, and — critically — registered together with the marriage in the Marriage Register on the day of registration. A prenup that is not registered at the time of marriage is void, and the couple is left with the default statutory regime as if no agreement existed.

A prenup can list each spouse's personal assets, set out how marital property is managed during the marriage, and serve as strong evidence of what is personal versus marital. What it cannot do is reclassify the fundamental categories of property, remove the fruits rule, or override the equal-division principle in Section 1533. Clauses commonly copied from foreign templates — waiving spousal maintenance, applying foreign law to Thai assets, penalising adultery, or dealing with child custody — are generally unenforceable under Thai law.

Contested vs. Uncontested: How Division Actually Happens
If both spouses agree on how to split their property, they can register an uncontested divorce at the district office (amphur) on their own agreed terms, including a division different from a strict 50/50 split. If they cannot agree, division is decided by the Family Court as part of the divorce judgment. Even in a contested case, the court strongly encourages mediation, and many property disputes settle through a compromise agreement that the judge then approves — faster and cheaper than a full trial.

Compensation Is Separate from Division
Property division should not be confused with compensation. Where a divorce is granted on the ground of adultery, Section 1523 allows the wronged spouse to claim compensation from the offending spouse and, in some cases, from the third party. This is a separate claim on top of the ordinary division of marital property.

Practical Steps to Protect Your Share
Keep records of every significant asset and the source of the funds used to buy it. Retain bank remittance slips, especially for money sent from abroad. Consider a properly registered prenuptial agreement before marriage. Avoid mixing personal and marital funds in a single account where possible. And take early legal advice — the way an asset is characterised at the start often determines the outcome years later.

Frequently Asked Questions
1. Is everything really split 50/50?
Only marital property (sin somros) is divided equally. Personal property (sin suan tua) stays with its owner if it can be proven. The dispute is almost always about which category an asset falls into.

2. The house is in my spouse's name. Do I lose it?
Not necessarily. If it was acquired during the marriage, it is presumed marital and divided regardless of the name on the title, unless your spouse proves it qualifies as personal property.

3. I paid for land but it is registered to my Thai spouse. Can I recover anything?
You generally cannot own the land, but Thai courts have allowed foreign spouses to reclaim proven personal funds used for the purchase. Documentary evidence of the money trail is essential.

4. Does income from my personal property get shared?
Yes. Rent, dividends, and interest earned during the marriage from personal assets are treated as marital property under the fruits rule.

5. Will my foreign prenuptial agreement be enforced?
Only if it meets Thai formalities, including registration at the time of marriage. Even then, clauses that conflict with Thai law — such as overriding equal division — will not be enforced.

Speak to a Thai Family Lawyer
Property division is where a Thai divorce becomes genuinely complex, particularly for foreigners with a home, land, a business, or funds brought in from abroad. Our bilingual family lawyers advise on classifying and protecting assets, negotiating fair settlements, drafting and registering prenuptial agreements, and representing clients in contested property disputes before the Family Court. Contact us to protect what is rightfully yours.

Disclaimer
This article provides general legal information only and does not constitute legal advice. The classification and division of property in a Thai divorce depend on the facts and evidence of each case. Please consult a licensed Thai attorney before acting on any matter with legal consequences.